Lumber-rule.



7 l MM H. A. PAQUETTE.

LUMBER RULE.

APPLICATION FILED APB.. 10,1911.

Patented Nov. 19, 1912.

wir??? M Jl. WJMA COLUMBIA PLANDGRAPH Co.. WASHINGTON, D. c,

' rrnn srarns ENCE HERMAN A. PAQUE'ITE, OF CHICAGO, ILLINOIS, ASSIGNORTO SMITH & PHILLIPS MAN- UFACTURING' COMPANY, OF CHICAGO, ILLINOIS, ACORPORATION OF ILLINOIS.

LUMBER-RULE.

`Specication of Letters Patent.

Application filed April 10, 1911.

Patented Nov. 19, 1912.

Serial No. 619,981.

'c all whom t may concern Be it known that I, HERMAN A. PAQUETTE,citizen of the United States, residing at Chicago, in the county of Cookand State of Illinois, have invented certain new and useful Improvementsin Lumber-Rules, of which the following is a specification.

My invention relates to improvements in lumber rules or board measuringdevices and the improvements which form the subject matter of this-application relate particularly to the manner of connecting the headwith the outer end of the rule.

In lumber rules as they have been made for many years the end of thestick has been driven into a socket to which the pointed head has beensecured, and rivets are then passed through suitable holes in the socketside plates and the end of the rule. The socket side plates do not coveror protect the edges of the rule, hence the hickory sticks from whichthese rules are made split at their ends, and the line of severanceo-nce started extends along the rule until the latter soon becomesuseless or breaks oft from the resulting weakness. The structure thusdescribed is found in U. S. Patent No. 272,279, issued February 13,1883, to E. T. Lufkin. Y

The especial object of my improvements is to secure the eXtreme end ofthe rule stick to the head that a split cannot start, and thus prolongthe usefulness ofthe article.

While the structural change required to overcome the weak point in thepresent rules is not extensive, its elfect is great and the utilityflowing therefrom is considerable, as will be readily appreciated bythose skilled in the art to which my invention relates.

In the accompanying drawing:-Fignre 1 is a sectional view of thehead-end of a lumber rule constructed according to m invention, on theline A-A of Fig. 3; Fig. 2 is a sectional view on the line BB of Fig. 3;Fig. 3 is a top-plan view of the head with the stick in place; Fig. 4cis a plan view of the head alone; Fig. 5 is a perspec` tive view of oneof the side plates; Fig. 6 is a perspective view of the end of the stickbefore the head is attached.

Referring to the details of the drawing, 7 represents a portion of alumber-rule `stick the end of which is cut away toform a rectangularsocket 7b with a tongue 7a, extending upwardly on each side thereof.

S, 8, represent flat metal plates provided with countersunk rivet holes8ZL and notched at the corners of their upper ends, as at 8c, to form atongue 8b. These plates are arranged on opposite sides of the stick 7and are rigidly secured thereto by rivets 12 which pass through theholes 8@L andthrough corresponding holes 12a in the stick.

9 represnts a metal wedge of suitable size to enter the socket 7 bfitting it with sutlicient lateral pressure to bind upon the tongues 7 aas indicated in Fig. 1. The oppo site sides of the body of the wedge areparallel, the wedging portion being at the upper end or head which isformed with beveled overhanging margins, as shown at 9a.

10 indicates the headplate which is preferably made in the oval formshown, and has punched in its center a rectangular slot 11 about twiceas long as itis wide, and extended at its ends by smaller slots 11awhich communicate with the main slot 11. The sides of the slot 11 areinclined or flared toward the top surface of the plate, as indicated at11b, to correspond with the beveled margins 9a of the head of the wedge.

After the side-plates 8 are riveted to the stick 7, the head-plate 10 isplaced over the end of the stick so that the tongues 7a enter the slots11a, andthe tongues 8b enter the main slot 11 with the shoulders left bythe notches 8c resting against the under side of the plate 10, asindicated by dotted lines in Fig. 3. The wedge 9 is then inserted in thesocket 7b and driven in until its outer end is flush with the edges ofthe tongues 7a and 8b thus clamping the ends of the tongues 7a betweenthe edges of the wedge and the beveled edges of the slot 117 the fourcorners of the wedge engaging the angles formed at the junction of theslots 11'@L with the slot 11. When the wedge is driven into its seat thebeveled side of its head will force the tongues 8b of the platesoutwardly, and after the wedge is driven home the ends of the tongues 8bare wedged or upset by hammering until they completely fill the spacebet-Ween the wedge and the sides of the slot 11,.V thus forming adcvetailed joint solidly interlocking the members, and when thusassembled the wedge and plates are secured together by a rivet 9b,thereby preventing the wedge from coming out and the head from becomingdisconnected from the stick.

Having thus described my invention, what I claim is I l. The combinationWith a stick having a socket formed by tongues on the sides of thesocket, plates secured to opposite sides of said stick and formingclosures for the sides of said socket, a head provided with a slotadapted to receive the ends of said plates and the ends of said tongues,and a Wedge driven through said slot and into said socket so as to clampthe ends of the tongues on the stick to the head, substantially in themanner set forth.

2. The combination with a stick having a rectangular socket formed byparallel.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, i

tongues on opposite sidesy of the socket, plates riveted to oppositesides of said stick said plates forming closures for said socket andhaving tongues on one end, a head provided With a central slot andsmaller slots communicating with the Central slot, said slots adapted toreceive Vrespectively the tongues on the plates and those on the stick,and a Wedge driven into said socket and adapted to clainp the ends ofthe tongues on the stick to the head, substantially as set forth.

ln testimony whereof I aiiix my signature in the presence of twoWitnesses.

HERMAN A. PAQUETTE. VVit-nesses F. BENJAMIN, H. DELos HIGMAN.

Washington, D. C.

